You can start a game for Last Sarkorians and make a save at the beginning of chapter 3 to replay the last dlc since that's when I think it's gonna take place.
It going to be act 5 for DLC 6 being I believe since it’s where all the mythic paths all going to a available( excluding swarm most likely for obvious reasons) and romances are locked in with also the reactivity to the companions ending quest lines come into play.
Let's just say, there's definitely some FEAST to be had if you know what I mean...